/** * @file llvolumemgr.h * @brief LLVolumeMgr class. * * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLVOLUMEMGR_H #define LL_LLVOLUMEMGR_H #include <map> #include "llvolume.h" #include "llpointer.h" #include "llthread.h" class LLVolumeParams; class LLVolumeLODGroup; class LLVolumeLODGroup { LOG_CLASS(LLVolumeLODGroup); public: enum { NUM_LODS = 4 }; LLVolumeLODGroup(const LLVolumeParams ¶ms); ~LLVolumeLODGroup(); bool cleanupRefs(); static S32 getDetailFromTan(const F32 tan_angle); static void getDetailProximity(const F32 tan_angle, F32 &to_lower, F32& to_higher); static F32 getVolumeScaleFromDetail(const S32 detail); LLVolume* refLOD(const S32 detail); BOOL derefLOD(LLVolume *volumep); S32 getNumRefs() const { return mRefs; } const LLVolumeParams* getVolumeParams() const { return &mVolumeParams; }; F32 dump(); friend std::ostream& operator<<(std::ostream& s, const LLVolumeLODGroup& volgroup); protected: LLVolumeParams mVolumeParams; S32 mRefs; S32 mLODRefs[NUM_LODS]; LLPointer<LLVolume> mVolumeLODs[NUM_LODS]; static F32 mDetailThresholds[NUM_LODS]; static F32 mDetailScales[NUM_LODS]; S32 mAccessCount[NUM_LODS]; }; class LLVolumeMgr { public: LLVolumeMgr(); virtual ~LLVolumeMgr(); BOOL cleanup(); // Cleanup all volumes being managed, returns TRUE if no dangling references virtual LLVolumeLODGroup* getGroup( const LLVolumeParams& volume_params ) const; // whatever calls getVolume() never owns the LLVolume* and // cannot keep references for long since it may be deleted // later. For best results hold it in an LLPointer<LLVolume>. virtual LLVolume *refVolume(const LLVolumeParams &volume_params, const S32 detail); virtual void unrefVolume(LLVolume *volumep); void dump(); // manually call this for mutex magic void useMutex(); friend std::ostream& operator<<(std::ostream& s, const LLVolumeMgr& volume_mgr); protected: void insertGroup(LLVolumeLODGroup* volgroup); // Overridden in llphysics/abstract/utils/llphysicsvolumemanager.h virtual LLVolumeLODGroup* createNewGroup(const LLVolumeParams& volume_params); protected: typedef std::map<const LLVolumeParams*, LLVolumeLODGroup*, LLVolumeParams::compare> volume_lod_group_map_t; volume_lod_group_map_t mVolumeLODGroups; LLMutex* mDataMutex; }; #endif // LL_LLVOLUMEMGR_H